Subtract small polygon from larger one

[Edwin Humphries]

Hi all: Another newbie question.

As shown in the screenshot, I have a polygon (a parking area, in yellow) from which I want to subtract another (a flower bed, in red). Both have been imported as closed polylines fro a line layer into the polygon layer.
How do I do this, without manually recreating the hole in the polygon?
Thanks in advance.

[John Bryant]

Hi Edwin, I've found the "Clipper" plugin useful for this... select the overlapping polygon A you want to clip out of polygon B, choose Vector > Clipper > Clipper, delete polygon A, and voila.

There might be a nice way to use built-in tools but this has always been my go-to.

Cheers!

John

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[Andrew Jeffrey]

An alternative to Johns clipper plugin (thanks btw I didn't know about that one) - is the "Difference" tool in the processing toolbox, in combination with the "Edit features in place" mode.

Two Polygons - make the layer you want to remove the shape from the "Active" layer by selecting it like I have in my screen shot

Go to you processing toolbox, select the "Edit Feature in place" mode, and then search for the difference tool and select it.

In the difference tool select the layer which has the shape to be removed 

.

The result will be your target layer is in an edit session with the object removed. Once you save the edit on that layer it will be permanent.

End result after clearing selection.

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[Edwin Humphries]

Thanks John. Very simple